[godot3.6] I compiled the web platform successfully, and set the compiled webassembly_debug.zip and webassembly_release.zip in the custom template.
When running, an error message was reported. I tried many ways but couldn't solve it.

modules\mono\glue\gd_glue.cpp:249 - Failed to export project: Missing BCL (Base Class Library) for platform: javascript

https://docs.godotengine.org/zh-cn/3.5/development/compiling/compiling_with_mono.html#targeting-webassembly